Cruz doesn't quite get second either. For him (thank the lord) this is the death knell as the nominee. He was comfortably beaten in New Hampshire and you just don't see how a tea party Texan with a direct line to God is going to get traction in the less evangelical winner takes all states of the north. He becomes a problem for Trump though
So Jebby the elephant packs his trunk and said goodbye to the circus,
off he went with a trumpty trump, trump, trump, trump
Where does that leave us? Well in the first case Rubio is clearly going to emerge as the establishment candidate. The Republicans are ordering in the last chance saloon now. No Republican has ever come back to climb this kind of hill, but then he can probably count on California coming down the track, and its equally fair to say they probably haven't seen a campaign like this either.
If this were Europe, it would be relatively straight forward to understand. We tend to operate the traditional right / left linear scale of allegiance. America has invented this model called the 5 ring circus which does better represent how their voting preferences transfer.
If a moderate (and I use the word loosely in the American way) as there is little that we would recognise as moderate about Kasich, or Rubio, but if a moderate were to drop out of the race, then we would expect their vote to transfer to the next nearest moderate. Similarly, if a fascist candidate dropped, we'd expect the nearest fascist to be the alternative choice. Political philosophy is probably less decisive in directing traffic in America however, as opposed to the cult of the candidate. The other thing to note is that the fascist tendancy exhibits two distinct strains. On the one hand we have Trump's nationalist fascism that we've seen before in Europe and are comapratively familiar with. On the other hand we have Ted Cruz's theological fascism, which is a percuiliarly American invention, and perhaps sits more closely to certain countries in the middle east. It's certainly without paralell in the western democracies of the world anyway. It's by no means guaranteed that the two will naturally feed each other.
Now the anti Trump brigade have pinned their hopes on the idea that an anybody but Trump candidate would emerge, and that this person (presumably Rubio) will hoover up the remnants. Sadly for them however, it doesn't work like that
To illustrate this, look at the USA Today poll of Bush supporters asked about their second preference (from an unrelaibly small sample)
Kasich = 35%
Rubio = 25%
Cruz = 15%
Trump = 15%
Undecideds 10%
https://www.washingtonpost.com/news/the-fix/wp/2016/02/20/where-do-jeb-bush-and-ben-carson-votes-go/
Kasich didn't campaign to any great extent in SC, dividing his time equally between there an Michigan. Similarly, he's taking a pass on Nevada too. It's a clear indication that his strategy is going through to at least Super Tuesday before he drops out at the earliest. You also suspect he's gambling on Rubio not having broken through by the time the states start to swing north and perhaps give him a better chance
So remarkable as it might seem, Rubio might only be picking up a ratio of no more than 2:1 off Bush against Trump, and even then, he's only doing so from a quarter of the votes up for grabs. It's not enough to overhaul the Donald. He needs Kasich to drop too, and to do so in good time to make up the shortfall. So in theory Bush is only going to serve about 2% to Rubio and 1% to Trump from a base of about 8%. It ain't enough to materially start affecting the outcome
The key bloc going forward therefore will be Cruz. At the moment he ain't going nowhere. How will his vote split?
If we follow the European linear left/ right model there'd be grounds for thinking he could actually serve votes to Trump, but this is too simplistic.
Trump did actually get fractionally more evangelicals than Cruz in SC, so there is evidence that they're prepared to overlook his wobbly religious credentials in favour of his nationalist right wing agenda. The southern states tend to be baptist as well though, so perhaps the Pope needn't have cut as much influence there as he could have done in the north. That Rump can survive an onslaught from his holiness though is testimony of something. I doubt Cruz or Rubio could
There will be opportunity for Rubio you feel once Kasich drops out. He looks capable of winning Virginia. I wouldn't describe Cruz as bomb proff in Texas or Oklahoma, but you'd think he should carry both.
The interesting dynamic that might occur later down the road though is whether Cruz's right wing starts to shed votes in favour of Trump to effectively adopt a 'stop Rubio' position.
Another thing I think I've detected in Trump is a softening in some of his positions regarding the potential adoption of more socially moderate positions. I suspect that he's possibly thinking in terms of reaching out to the more hard nosed and less dogmatic Kasich supporters of the winner takes all states in the north. I think he's calaculating that they're nervous about a 1 term Florida senator who counts Jeb as his mentor. If they take the view that Trump is the best bet against Hillary, I wouldn't automatically assume that they'll all transfer en masse to Rubio. Again, even if they do so in a ratio of 2:1, it's likely to be too little, too late
The theoretical maths that a unified establishment candidate could beat Trump still holds, but by the time they get down to this position Trump could be up on about 40% with a fair amount of real estate bagged. The fact that the GOP have even been reduced to this is a salutory testimony in itself considering they were all laughing at him back in July.
It's going to start to get interesting very shortly